*{ Display ... }*
${_disabled}
#{if _multiple}
   #{select 'groupTypes',  items:_models.GroupType.findAll(), valueProperty:'id', labelProperty:'name', id:'group_types', multiple:true, value:3 /}
#{/if}
#{else}
   #{select 'groupTypes',  items:models.GroupType.findAll(), valueProperty:'id', labelProperty:'name', id:'group_types' /}
#{/else}